CN1280861C - Overvoltage protection device - Google Patents

Overvoltage protection device Download PDF

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Publication number
CN1280861C
CN1280861C CNB038125900A CN03812590A CN1280861C CN 1280861 C CN1280861 C CN 1280861C CN B038125900 A CNB038125900 A CN B038125900A CN 03812590 A CN03812590 A CN 03812590A CN 1280861 C CN1280861 C CN 1280861C
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CN
China
Prior art keywords
electrode
strutting piece
movable
arc
rest
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Expired - Lifetime
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CNB038125900A
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Chinese (zh)
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CN1659670A (en
Inventor
埃里克·多米杰恩
马克·里瓦尔
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Schneider Electric SE
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Schneider Electric SE
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Publication of CN1659670A publication Critical patent/CN1659670A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/12Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20Bridging contacts
    • H01H1/2041Rotating bridge
    • H01H1/205Details concerning the elastic mounting of the rotating bridge in the rotor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/10Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04Means for indicating condition of the switching device
    • H01H2071/044Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2409Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/107Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
    • H01H77/108Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops comprising magnetisable elements, e.g. flux concentrator, linear slot motor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/24Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for spark-gap arresters

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

The invention relates to a protection device against overvoltages, comprising a fixed electrode (12) and a movable electrode (22), arranged facing an arc extinguishing chamber (54). The movable electrode (22) is operated by an electromechanical actuator and/or an electromagnetic circuit (31) via a mechanism (32). At rest the movable electrode (22) is located remote from the fixed electrode (12). On an overvoltage occurring between the electrodes an arc breaks out and extends into the chamber (54) to extinguish. Should the arc persist, particularly for a current of high energy, the movable electrode (22) is driven to an isolation position on retiring from the fixed electrode, which has the effect of beneficially extending the arc within the chamber to make the extinguishing thereof easier and to guarantee the isolation of the circuit. Where necessary a pair of contacts (16, 20) can be connected in series with the electrodes (12, 22), one of the contacts being fixed and the other mounted on the movable electrode. A sparking gap (60) may also be connected to the electrodes.

Description

Voltage surge protection device
Technical field
The present invention relates to a kind of equipment that when electric wire voltage surpasses given threshold value, current wave can be turned to ground wire.
Technical background
At file EP0,071, a kind of electric equipment that is used to prevent voltage surge has been described in 956, gap, circuit-breaker that described equipment is included in being connected in the public housing between two terminals may also have piezo-resistance, one of them links to each other described terminals with power line, another ground connection.The electromagnetic trip device of circuit-breaker has the time delay function greater than 5 milliseconds.In the operation, circuit-breaker is closed, and gap disconnects.If the generation voltage surge, gap will be switched on, and makes corresponding current wave turn to ground wire.If the on-state of gap continues to surpass 5 milliseconds, circuit-breaker will trip and open circuit.Such equipment is quite expensive, and this is because it requires some function combinations are arrived together, is not real working in coordination with between these functions.And, gap, circuit-breaker and to be connected their impedance that conductor gathered very high, this has just caused very high protection voltage.
Summary of the invention
Therefore target of the present invention is to correct the shortcoming in these technology status, proposes a kind of simple and compact device, described device can provide and the prior art state in the identical functions of associating between gap arrester and the circuit-breaker.
In order to reach this purpose, target of the present invention is to provide a kind of device that is used to prevent voltage surge, and described device comprises:
First electrode,
Second electrode,
First arc control device, described arc control device dispose energy dissipator, are used to the energy that electric arc produced that dissipates and cause by between first electrode and second electrode,
It is characterized in that the described device of voltage surge that prevents also comprises:
Movable strutting piece, described movable strutting piece is fixed firmly to second electrode, and can with respect to first electrode the stop bit of having a rest put and retracted position between move, when movable strutting piece is positioned at the stop bit of having a rest and puts, second electrode is in first distance from the first electrode non-zero, put when moving to retracted position from the stop bit of having a rest when movable strutting piece, second electrode is removed from first electrode
Be used for movable strutting piece is put the driver that is driven into retracted position from the stop bit of having a rest.
The electrode of described device combines the effect of the contact of the electrode of lightning arrester and circuit-breaker, the impedance when making the impedance of device terminals can remain below lightning arrester and circuit-breaker to be connected in series.Described drive combination several functions: in some cases, they can extinguish the electric arc that is produced by continuous current.They are also applicable to shearing device this purpose when finish device lifetime.The device of gained is very compact.
Advantageously, described device also comprises retainer, with prevent movable strutting piece drive second electrode from the distance of first electrode less than first distance and/or be used for movable strutting piece is turned back to the back-moving spring that the stop bit of having a rest is put.These are arranged so that first electrode and second distance between electrodes can accurately be controlled when the stop bit of having a rest is put.
Advantageously, described driver comprises a mechanism, and described mechanism comprises:
Energy storage device, described energy storage device have can be between loading position and off-position movable spring,
Linkage is connected to movable strutting piece with energy storage device, thus when energy storage device when loading position moves to the off-position, movable strutting piece can be put from the stop bit of having a rest and be driven into retracted position,
Energy storage device is locked in the release catch of loading position.
Advantageously, described mechanism is a circuit breaker mechanism, thereby can utilize a mechanism that can hold its reliability fully to obtain needed function very simply.Preferably, described mechanism also comprises a Disjoncteur, when electric current is flowed through first electrode and second electrode and/or when detector records first electrode and the second interelectrode potential difference and reaches condition, discharges release catch.
Advantageously, described driver comprises an electromagnetic circuit that is used for induced electricity magnetic force on second electrode and/or movable strutting piece, thereby when electric current is flowed through second electrode, trends towards movable strutting piece is driven into retracted position.By this device, driver has been endowed very high speed, and this speed can be guaranteed the restriction to continuous current, thereby quickens its disappearance.
Described driver also can comprise an electromechanical relay that is equipped with striker, and when detecting the disconnection condition, described striker can clash into movable strutting piece, thereby movable strutting piece is driven into retracted position.Described relay can be any suitable known type.Specifically, it can be electromagnetic relay, piezo-activator or thomson effect actuator.
Preferably, described device also comprises the striking device that is used for striking between first electrode and second electrode.Even thereby the residing environment of electrode has the insulation characterisitic of fluctuation, also can accurately control the igniting of electric arc.Therefore need not electrode is arranged in the capsul that is filled with the gas that a kind of insulation characterisitic can accurately be controlled.According to an embodiment, described striking device comprises:
Be used to detect the testing circuit of potential difference between first electrode and second electrode, and
Be used for when first electrode and the second interelectrode potential difference reach pre-conditioned the arc ignition circuit of striking between fixed electrode and movable electrode.
In order to obtain a simple and compact especially arc ignition circuit, this arc ignition circuit comprises:
Between first electrode and second electrode, be used to light the arc electrode of electric arc,
Wherein arc ignition circuit produces striking voltage at arc electrode and first electrode and second electrode between one of them.
Advantageously, described driver comprises and is used for movable strutting piece is driven into the device that reinitializes that the stop bit of having a rest puts from retracted position.Like this, obtained the equipment that to restart.Can manually realize returning the stop bit of having a rest and put, use handle, perhaps automatically provide energy by motor by the operator.According to an embodiment, the described device that reinitializes comprises and is used for movable strutting piece is turned back to the back-moving spring that the stop bit of having a rest is put.Described back-moving spring can be different from the spring of energy-storage system.In Tumbler type mechanism, the back-moving spring that reinitializes in the device also can be identical with the spring of energy-storage system.
Advantageously, described device also comprises and is used to indicate movable strutting piece to be positioned at the display device of retracted position.If equipment is provided with the handle that is connected to mechanism, this handle can be used as display device.
Advantageously, described device also comprises a pair of intercell connector that is used for device is connected to electric wire and ground wire, and this is made up of first intercell connector that is connected with the first electrode permanent electric and second intercell connector that is electrically connected with second electrode when movable strutting piece is positioned at the stop bit of having a rest and puts at least intercell connector.
According to an embodiment, second electrode is connected with the second intercell connector permanent electric.
In order to promote control, be provided with following content to ignition phase:
The 3rd fixed electrode is arranged between first electrode and second electrode, and is maintained fixed distance with first electrode,
The 4th fixed electrode, be arranged between the third electrode and second electrode, described the 4th fixed electrode permanent electric is connected in third electrode, being positioned at second electrode that the stop bit of having a rest puts contacts with the 4th electrode, be positioned at second electrode and the 4th electrode separation of retracted position, arc control device are provided with energy dissipator, are used to the energy that electric arc produced that dissipates and cause by between the third electrode and first electrode.
This embodiment proves that it can be particularly well suited to low electric device.
As selection,, can provide following content especially for high electric device:
Third electrode;
The 4th electrode, be fixed firmly to movable strutting piece and permanent electric and be connected in second electrode, when movable strutting piece is positioned at the stop bit of having a rest and puts, the 4th electrode is positioned at and the third electrode position contacting, when movable strutting piece is positioned at retracted position, the 4th electrode is positioned at the separation point position that a segment distance is arranged from third electrode
Second arc control device, described second arc control device are provided with the energy dissipator that is used to dissipate by the energy that electric arc produced that causes between third electrode and the 4th electrode.
Be that described device can comprise more accurately:
The a pair of intercell connector that is used to attach the device to electric wire and ground connection, this is made up of first intercell connector that is connected with the fixing first electrode permanent electric and second intercell connector that is electrically connected with second electrode when movable strutting piece is positioned at the stop bit of having a rest and puts at least intercell connector
Fixing third electrode, permanent electric is connected in second intercell connector,
The 4th electrode, be fixed firmly on the movable strutting piece, movable and permanent electric is connected in second electrode, when movable strutting piece is positioned at the stop bit of having a rest and puts, described the 4th electrode is in and the third electrode position contacting, when movable strutting piece was positioned at retracted position, described the 4th electrode was positioned at the separation point position that a segment distance is arranged from third electrode
Second arc control device, described second arc control device are provided with the energy dissipator that is used to dissipate by the energy that electric arc produced that causes between third electrode and the 4th electrode.
Description of drawings
Other advantage and feature will become more clear and intuitive in following description to specific embodiments of the invention, given specific embodiment is as just non-limitative example, and as shown in drawings.Wherein:
Accompanying drawing 1 expression is positioned at initial position according to the device of first embodiment;
Device in the accompanying drawing 2 expression accompanying drawings 1 is positioned at the position of repelling each other;
Device in the accompanying drawing 3 expression accompanying drawings 1 is positioned at trip position;
The winding diagram of device in the accompanying drawing 4 expression accompanying drawings 1, described device is inserted in the voltage surge protective circuit;
Accompanying drawing 5 expressions are positioned at initial position according to the device of second embodiment;
Device in the accompanying drawing 6 expression accompanying drawings 5 is positioned at retracted position.
Embodiment
With reference to figs 1 to accompanying drawing 3,, comprise being arranged in insulation synthetic material 10 housing made: the fixed electrode 12 that is connected to intercell connector 14 according to the device of first embodiment of the invention; Be connected to the fixed contact 16 of another intercell connector 18; And metal bridger 20, described bridger 20 comprises movable electrode 22 towards fixed electrode 12 at the one end, comprises movable contact 24 towards fixed contact 16 in its end opposite.Described bridger 20 is installed on the axle 26 by back-moving spring 28, and described back-moving spring trends towards movable contact 24 being pushed to the described bridger 20 of direction upper offset of fixed contact 16.Described bridger 20 can be relatively axle 26 put from the stop bit of having a rest shown in the accompanying drawing 1 and move to the retracted position shown in the accompanying drawing 2.Retainer 30 is fixedly secured to described housing, and bridger 20 can collide this retainer, and therefore described retainer 30 can prevent that electrode from moving to the Bueche stop bit mutually and putting more close position.Intercell connector 14 and 18 is the C font, when electric current is flowed through intercell connector, the magnetic line of force that is induced can be put together.And described intercell connector 18 is round a U-shaped magnetic circuit 31, and described magnetic circuit 31 can the concentration magnetic line of force, also will concentrate manyly in contact 16,24 regions.Axle 26 drives by a mechanism 32, and around an imaginary geometrical axis 34 ', rotates between the open position shown in make position shown in the accompanying drawing 1 and the accompanying drawing 3, and described geometrical axis 34 ' is perpendicular to plane, accompanying drawing place.Described mechanism is a kind of double break circuit breaker mechanism of known type, and the mechanism of this known type is at for example document FR2, is described in detail in 684,249.This mechanism comprises that claw that a handle that rotates around fixed axis 36 34, one rotate around fixed axis 40 38, one are combined in first bar 42 on the claw 38, one by the joint and are combined in extension spring 48 between second bar 44 on first bar 42 and the axle 26, the joint portion that is installed in handle 34 and lever system 42,44 and a release catch 50 that claw 38 is hooked in position shown in the accompanying drawing 1 by the joint.Described release catch is operated by electromechanical relay.
Arc control device 54 are set to towards electrode 12,22, make another chamber 56 towards contact.Each chamber 54,56 all is provided with cooling fins 58, and described cooling fins is used to cool off electric arc.
As schematically showing in the accompanying drawing 4, described device is connected to electric wire 70 via one of them intercell connector, is connected to ground wire 72 via another intercell connector, and need not specifies a specific closure.An arc electrode 60 is set between two electrodes 12,22.Described arc electrode 60 is controlled by electric arc ignition circuit 74, and described electric arc ignition circuit is connected between bridger and the fixed electrode.The potential difference that described electric arc ignition circuit 74 detects between movable electrode 22 and the fixed electrode 12.Disjoncteur 76 detects the current strength that flows to ground wire by measurement ring, and command machine electrical relay 52.In addition, also have one and Disjoncteur system associated, be used for detecting, write down and transmit the information characteristics of voltage surge at described device terminals place and the information characteristics of the electric current that described device flows, and particularly quantity, the maximum of the lighting that write down and the duration of lighting of lighting.
Described device is operated in the following ways:
Described device just often is positioned at the stop bit of having a rest shown in the accompanying drawing 1 and puts.Owing to have the gap between the electrode 12,22, so the circuit between the intercell connector 14,18 disconnects.Voltage surge takes place in circuit, and for example because the voltage surge that causes of lightning, arc ignition circuit 74 will detect a potential difference.If described potential difference surpasses given threshold value,, arc ignition circuit 74 lightens an electric arc at 12,22 at electrode thereby will making arc electrode 60 be elevated to enough current potentials.Need not bridger 20 any action takes place, the circuit of this electric arc between just can closed intercell connector 14,18, and make current wave flow to ground wire.Because intercell connector 14 be C shape structure, so electric arc can extend in the arc control device 54, described arc control device 54 can absorb the portion of energy that electric arc distributed, thereby allow arc voltage rise and make the electric arc dissipation.
Yet, if the intensity of arc current is very high, intercell connector 14 and the intercell connector 18 that is reinforced by magnetic circuit 31 will be made enough big mutual exclusion electromagnetic force on contact bridger 20 so, thereby overcome the bias force of back-moving spring 28, cause that contact bridger 20 pivots, and need not axle 26 any action is arranged, the position in arriving accompanying drawing 2.This action causes separating between movable contact 24 and the fixed contact 16.Produce secondary electric arc between the contact 16,24.The electromagnetic force effect that C shape structure by intercell connector 18 is produced can make this secondary electric arc reach in the arc control device 56.Because the increase of distance between the electrode 12,22 and between the contact 16,24, when bridger 20 during near retracted position, two electric arcs of series connection prolong in addition more.Thereby when initial current wave flow through, the voltage between the intercell connector 14,18 can not produce restriction to the initial current ripple.On the other hand, be enough to limit greatly by two arc voltages that serial arc gathered or even eliminate described continuous current fully.Current wave one flows through, and electric arc will disappear, and described device will recover.
Yet if the duration of interelectrode electric arc is higher than Preset Time, so, Disjoncteur 76 will detect this fault, and 32 disconnections of order mechanism, axle and bridger is driven into the position of accompanying drawing 3 with this.In this position, the distance of one side by in air, gathering between bridger 20 and the fixed electrode 12, the distance of gathering in air by bridger 20 and fixed contact 16 is guaranteed the disconnection of electric wire and ground wire on the other hand.Indicate off-state by handle 34 and/or any suitable indicator light or indicating device.The tripping operation of described mechanism is caused by exceptional condition thus, thereby guarantees to be arranged on the selectivity of the circuit breaker device between electric wire and ground wire.
Described mechanism also is provided with one and is used for the heat release device that the executive chairman postpones to trip.Like this, if break down between electrode, when causing pseudo-electric arc between electric wire and ground wire, to produce electric current, the disconnection between the disconnection of described mechanism and execution electric wire and ground wire.
If needed, can make described mechanism closure, put thereby return the stop bit of having a rest shown in the accompanying drawing 1 by handle.Described mechanism thus can be behind attended operation by closed again.
Can imagine various optionally embodiment.Specifically, be used to guarantee the retainer 30 of distance between movable electrode and the fixed electrode, can be set at and make it can carry out any position of its function.Clearly, described driving mechanism can be any known type that is used for the drive circuit contact of breaker.Clearly, described mechanism comprises distinct closing spring and disconnects spring.If needed, can nonrotationally drive movable electrode by translation.
The electromagnetism mutual exclusion is selectable.In fact, described electromagnetism mutual exclusion can directly be produced by the electric current flow regime, and need not electrode by described mechanism kinematic to the electrode off-state.
According to an embodiment who does not optionally show in the drawings, can imagine equally, relative rotation geometry axis a 34 ' symmetry of device is arranged, wherein, this can be replaced by a pair of electrode identical with electrode 12 and 20 contact 16,24, and an arc electrode identical with electrode 60 can be set between the two.
Described principle can be changed in the structure that singly opens circuit equally, the described structure that singly opens circuit is not to comprise a pair of contact, but includes only a fixed electrode and a movable electrode, and described fixed electrode and movable electrode are set to towards independent arc control device.
With reference to the accompanying drawings 5 and 6, the device according to second embodiment of the invention that covers in the housing of being made by insulating material 110 comprises: a fixed electrode 112 that is connected to intercell connector 114; A movable electrode 122 that supports by arm 120, described arm 120 rotates and is connected to intercell connector 118 around fixed axis; And a fixed conducting pad 123, described conductive pad 123 exists one to constitute fixed electrodes and towards surperficial 123A (accompanying drawing 6) and an opposed surface 123B (accompanying drawing 6) who constitutes contact electrode and settled movable contact electrode 122 on it of electrode 112.These electrodes are set to the arc control device 154 that are equipped with cooling fins 158 towards one.Described chamber 154 is provided with following arcing horn 158A and last arcing horn 158B who is connected to intercell connector 118 who is electrically connected to fixed electrode 112.
Arc electrode 160 by arc ignition circuit 174 controls is set between fixed electrode 114 and the pad 123, and described arc ignition circuit 174 is used to detect the potential difference between intercell connector and the pad.Electromechanical relay 152 is set to towards cursor.Described relay comprises the coil 152A that is connected in series between intercell connector 114 and the fixed electrode 112, to form the yoke 152B of magnetic circuit, extend the mobile armature 152C of a striker 152D and armature is turned back to have a rest stop bit to be put by elasticity be the back-moving spring 152E in left side in accompanying drawing 5 and 6.
In the operation, one of intercell connector 114,118 is connected to electric wire, and another is grounded.Owing to be provided with a segment distance between the electrode 123A of fixed electrode 112 and pad 123, so described device is not in on-state.If described fixed electrode 112 and 123 potential difference of pad have surpassed preset threshold value, so, arc ignition circuit 174 voltage of arc electrode 160 that will raise, thus between arc electrode and an electrode, light an electric arc.Described electric arc is immediately at fixed electrode 112 with fill up 123 generations, and electric current finds a paths, the arm 120 that the fixed electrode 112 of flowing through, pad 123, movable electrode 122 and the stop bit of having a rest are put between intercell connector.The annular of described electrode 112 induces electromagnetic force on electric arc, thereby pushes electric arc to described chamber.Described electric arc thereby can on arcing horn 158A and 158B, switch, thus and penetrate the chamber and when current wave finishes, be dissipated in the chamber.The dissipation of electric arc has disconnected circuit, and electric wire and ground wire are isolated.Described electric arc entire life is tens microseconds only, and is enough short, makes relay because inertia and can not operating.
Yet in some environment, arc energy continues to be present in electrode 112 and fills up between 123, and this is because continuous current or because time relationship electrode variation.In this case, provide an electromechanical relay, had the sufficiently long time to drive mobile component 152C with assurance, its end 152D hits arm 120, and make arm 120 reach retracted position, as shown in Figure 6.Described subsequently electric arc switches between fixed electrode and movable electrode, and elongation is in entering the chamber that makes its dissipation.A claw can be set be used for preventing that arm 120 from retreating.A resetting device is provided for making arm to return the stop bit of having a rest and puts.
Certainly, various modification all is possible.
In second embodiment, must be electrically connected to intercell connector with going up arcing horn invariably.And, in a second embodiment, a device that guarantees contact pressure can also be set.
Striking is selectable.Can carry out striking with any suitable device.Particularly can realize striking by a pair of arc electrode of the gas ionization between fixed electrode and movable electrode that can make.

Claims (18)

1. voltage surge protection device comprises:
First electrode (12,112),
Second electrode (22,122),
First arc control device (54,154), described arc control device dispose energy dissipator (58,158), are used for dissipating by the energy that electric arc produced that causes between first electrode (12,112) and second electrode (22,122),
It is characterized in that described device also comprises:
Movable strutting piece (20,120), described movable strutting piece is fixed firmly to second electrode (22,122), and can be with respect to first electrode (12,112) the stop bit of having a rest put and retracted position between move, when movable strutting piece is positioned at the stop bit of having a rest and puts, second electrode (22,122) be in first distance from the first electrode non-zero, put when moving to retracted position from the stop bit of having a rest when movable strutting piece, second electrode is removed from first electrode
Be used for movable strutting piece is put the driver (32,152) that is driven into retracted position from the stop bit of having a rest.
2. device according to claim 1 is characterized in that, described device also comprises retainer (30,123), to prevent that movable strutting piece from driving second electrode and arriving from the distance of first electrode position less than first distance.
3. device according to claim 1 and 2 is characterized in that, described device also comprises and is used for movable strutting piece is turned back to the back-moving spring (28) that the stop bit of having a rest is put.
4. device according to claim 1 is characterized in that, described driver comprises a mechanism, and described mechanism comprises:
Energy storage device, described energy storage device have can be between loading position and off-position movable spring (48),
Linkage is connected to movable strutting piece with energy storage device, thus when energy storage device when loading position moves to the off-position, movable strutting piece can be put from the stop bit of having a rest and be driven into retracted position,
Energy storage device is locked in the release catch (50) of loading position.
5. device according to claim 4, it is characterized in that, described mechanism also comprises Disjoncteur (76), described Disjoncteur is used for when electric current is flowed through first electrode and second electrode and/or when detector (174) records first electrode and the second interelectrode potential difference and reaches condition, discharges release catch.
6. device according to claim 1, it is characterized in that, described driver comprises the electromagnetic circuit (14 that is used at second electrode (22) and/or the last induced electricity magnetic force of movable strutting piece (20), 18,31), thereby when electric current is flowed through second electrode, trend towards movable strutting piece (20) is driven into retracted position.
7. device according to claim 1, it is characterized in that described driver comprises the electromechanical relay (152) that is equipped with striker (152D), when detecting the disconnection condition, described striker can clash into movable strutting piece, thereby movable strutting piece is driven into retracted position.
8. device according to claim 1 is characterized in that, described device also comprises the striking device (60) that is used for striking between first electrode and second electrode.
9. device according to claim 8 is characterized in that, described striking device comprises:
Be used to detect the testing circuit of potential difference between first electrode and second electrode, and
Arc ignition circuit (74,174) is used for when first electrode and the second interelectrode potential difference reach pre-conditioned striking between fixed electrode and movable electrode.
10. device according to claim 9 is characterized in that, described arc ignition circuit comprises:
The arc electrode (60,160) that between first electrode and second electrode, is used to light electric arc,
Wherein arc ignition circuit (74,174) produces striking voltage at arc electrode and first electrode and second electrode between one of them.
11. device according to claim 1 is characterized in that, described driver comprises and is used for movable strutting piece is reinitialized device (28) from what retracted position was driven into that the stop bit of having a rest puts.
12. device according to claim 11 is characterized in that, the described device that reinitializes comprises and is used for movable strutting piece is turned back to the back-moving spring (28) that the stop bit of having a rest is put.
13. device according to claim 1 is characterized in that, described device also comprises and is used to indicate movable strutting piece to be positioned at the display device of retracted position.
14. device according to claim 1 is characterized in that, described device also comprises:
The a pair of intercell connector that is used to attach the device to electric wire and ground wire, this comprises first intercell connector (14) that is connected with the first electrode permanent electric and second intercell connector (18) that is electrically connected with second electrode at least to intercell connector when movable strutting piece is positioned at the stop bit of having a rest and puts.
15. device according to claim 14 is characterized in that, second electrode is connected with the second intercell connector permanent electric.
16. device according to claim 1 is characterized in that, described device also comprises:
The 3rd fixed electrode (123A) is arranged between first electrode and second electrode, and is maintained fixed distance with first electrode,
The 4th fixed electrode (123B), be arranged between the third electrode and second electrode, described the 4th fixed electrode permanent electric is connected in third electrode, being positioned at second electrode that the stop bit of having a rest puts contacts with the 4th electrode, be positioned at second electrode and the 4th electrode separation of retracted position, arc control device are provided with energy dissipator (158), are used to the energy that electric arc produced that dissipates and cause by between the third electrode and first electrode.
17. device according to claim 1 is characterized in that, described device also comprises:
Third electrode (16);
The 4th electrode (24), be fixed firmly to movable strutting piece and permanent electric and be connected in second electrode (22), when movable strutting piece is positioned at the stop bit of having a rest and puts, described the 4th electrode is positioned at and the third electrode position contacting, when movable strutting piece is positioned at retracted position, described the 4th electrode is positioned at the separation point position that a segment distance is arranged from third electrode
Second arc control device (56), described second arc control device are provided with the energy dissipator (58) that is used to dissipate by the energy that electric arc produced that causes between third electrode and the 4th electrode.
18. device according to claim 1 is characterized in that, described device also comprises:
The a pair of intercell connector that is used to attach the device to electric wire and ground connection, this comprises first intercell connector (14) that is connected with the first fixing electrode permanent electric and second intercell connector (18) that is electrically connected with second electrode at least to intercell connector when movable strutting piece is positioned at the stop bit of having a rest and puts
Fixing third electrode (16), permanent electric is connected in second intercell connector (18),
The 4th electrode (24), be fixed firmly on the movable strutting piece, movable and permanent electric is connected in second electrode, when movable strutting piece is positioned at the stop bit of having a rest and puts, described the 4th electrode is in and the third electrode position contacting, when movable strutting piece was positioned at retracted position, described the 4th electrode was positioned at the separation point position that a segment distance is arranged from third electrode
Second arc control device (56), described second arc control device are provided with the energy dissipator (58) that is used to dissipate by the energy that electric arc produced that causes between third electrode and the 4th electrode.
CNB038125900A 2002-05-30 2003-04-09 Overvoltage protection device Expired - Lifetime CN1280861C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR02/06605 2002-05-30
FR0206605A FR2840448B1 (en) 2002-05-30 2002-05-30 OVERVOLTAGE PROTECTION DEVICE

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CN1659670A CN1659670A (en) 2005-08-24
CN1280861C true CN1280861C (en) 2006-10-18

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JP (1) JP4170289B2 (en)
CN (1) CN1280861C (en)
AU (1) AU2003246796A1 (en)
DE (1) DE60335184D1 (en)
FR (1) FR2840448B1 (en)
WO (1) WO2003102991A1 (en)

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EP1508150A1 (en) 2005-02-23
EP1508150B1 (en) 2010-12-01
JP4170289B2 (en) 2008-10-22
US20050174716A1 (en) 2005-08-11
FR2840448B1 (en) 2004-07-23
AU2003246796A1 (en) 2003-12-19
JP2005528752A (en) 2005-09-22
US6987657B2 (en) 2006-01-17
DE60335184D1 (en) 2011-01-13
WO2003102991A1 (en) 2003-12-11
CN1659670A (en) 2005-08-24
FR2840448A1 (en) 2003-12-05

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